Over-current protection circuit
US10063132B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2017 |
| Grant date | Aug 28, 2018 |
| Priority date | — |
| Expiry date | Feb 28, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/356017
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A negative over-current protection circuit for a switching inverting converter is provided. The circuit contains an energy-storing element coupled to a power switch via a switching node, a current sensor adapted to sense a current at the switching node and to convert the current into a voltage. The circuit also contains a converter adapted to convert the voltage into a first current associated with a first domain, a level shifter adapted to convert the first current into a second current associated with a second domain and a current comparator adapted to compare the second current with a reference current and to provide a logic signal based on the comparison. A method of protecting a switching converter from an over-current is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.